Sandvik Coromant 6398190 Cutoff Insert 3mm Corocut Qd

Product Description

The SANDVIK COROMANT 6398190 is a solid carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. It carries the manufacturer catalog designation QD-NG-0300-0001-CO 1135 and belongs to the CoroCut QD series. The insert features a 3 mm (0.1181 inches) cutting width, a neutral lead angle, and a PVD-applied TiCN/Al2O3/TiN multilayer coating that supports extended tool life in steel and stainless steel applications. A corner radius of 0.10 mm and a 7-degree relief angle define the cutting geometry. This insert is installed by machinists and CNC toolroom technicians working in production turning environments.

The 6398190 is suited for shallow to moderate-depth parting operations in both light production and high-volume turning cells. The CO chipbreaker geometry promotes controlled chip evacuation, which is critical when parting off bar stock or finishing grooves on rotating workpieces. The clamp-style insert holding method ensures positive seating in compatible CoroCut QD toolholders. This insert is appropriate for use on conventional lathes and CNC turning centers handling ferrous and non-ferrous materials where a 3 mm parting width is specified.

Key Features

• Solid carbide construction with manufacturer grade 1135 for wear resistance in turning applications
• PVD coating process with TiCN/Al2O3/TiN multilayer finish for thermal and abrasion resistance
• 3 mm cutting width (0.1181 inches) with neutral hand orientation for flexible setup
• CO chipbreaker geometry for reliable chip control during parting and grooving
• 7-degree relief angle and 0.10 mm corner radius for precise edge geometry
• Clamp-style insert holding method for secure, repeatable seating in QD-compatible toolholders

Compatibility

Designed for use with CoroCut QD series toolholders that accept insert seat size G. Consult the toolholder documentation to confirm seat size and clamping compatibility before installation.

Installation Notes

This insert is installed by qualified machinists or toolroom technicians. Power down and lock out the machine before changing inserts. Use the appropriate torque wrench and clamp screw per the toolholder manufacturer instructions — do not overtighten by hand. Inspect the insert seat for chips or debris before seating the new insert to ensure proper contact and cutting geometry.